Science is a subject built on doing. Students learn chemistry through titrations, biology through dissections, physics through motion experiments, and earth science through field observations. That ...

Watch a simple but fascinating chemistry experiment using phenolphthalein and dry ice to demonstrate pH changes in real time. See how carbon dioxide forms acid in water and causes a dramatic color ...

Barbie Cervoni, MS, RD, CD/N, CDE, is a registered dietitian (RD) and certified diabetes care and education specialist (CDCES). She has spent most of her career counseling patients with diabetes, ...

pH meters are electric appliances used for measuring the- alkalinity or acidity of a solution. pH is measured using potentiometric methods or pH indicators such as indicator solutions or strips ...

Laboratory astrophysics is the study of astrophysical phenomena in the laboratory (Earth- or space-based). This might include various aspects of astrochemistry (chemical reactions under extreme ...

Pathogens are infectious agents, such as a bacterium, virus, fungus or parasite, that cause disease when they colonize a host organism. Sex-specific differences in susceptibility to skin infections ...

Radiolab is on a curiosity bender. We ask deep questions and use investigative journalism to get the answers. A given episode might whirl you through science, legal history, and into the home of ...

Feb. 28, 2026 Scientists have built a massive cellular atlas showing how aging reshapes the body across 21 organs. Studying nearly 7 million cells, they found that aging starts earlier than expected ...